3-styryl-1,4-benzodiazine-2-one

(E)-2-oxo-4-phenyl-3-butenoic acid

1,2-苯二胺

2-(3-oxo-1,4-dihydroquinoxalin-2-ylidene)-1,3-diphenylpropane-1,3-dione

3-(α,β-dichloro-phenethyl)-1H-quinoxalin-2-one